03142nab a2200325 i 4500003000900000005001700009008004100026040001800067072001400085072000800099100002800107100002700135100003900162100003500201100003900236100001800275100002800293245011900321500005700440520092400497520100701421650000902428650002202437650001702459650001902476650002302495650003002518773019002548856007802738BR-BrBNA20240417135746.0240417b2021    bl.ar|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aF04b3385  aF61  aWerneck, Carlos Guarino  aHaim, Patrick Gesualdi  aBreda, Farley Alexandre da Fonseca  aMonte, Marisa Bezerra de Mello  aBernardi, Alberto Carlos de Campos  aMazur, Nelson  aPolidoro, José Carlos  aAmmonia volatilization and agronomical efficiency of a mixture of urea with natural zeolite for rose fertilization  a
Publicação on-line; 26 ref.; Summaries (En, Pt)  a

Abstract – The objective of this work was to evaluate the losses of N-NH3 by
volatilization and the agronomic efficiency of a mixture of urea with natural
zeolite, as topdressing fertilization, in an area for the commercial production
of roses (Rosa spp.). The treatments were: two rates of urea (60 and 120 kg ha-1),
with and without zeolite. The N sources were applied directly to soil surface,
and volatilization was determined using a free semi-open static chamber. The
quantitative and qualitative variables of the collected flower stems were used
to determine the agronomical efficiency of the fertilizers. The zeolite mixture
reduces N-NH3 losses in 30%, compared with the commercial urea fertilizer,
and shows a higher agronomic efficiency, resulting in an increase of 25 dozen
of flower stems per each kilogram of N applied.


Index terms: Rosa, aluminosilicates, ammonium trapping, slow release,
stilbite.  a

Resumo − O objetivo deste trabalho foi avaliar as perdas de N-NH3 por
volatilização e a eficiência agronômica de mistura de ureia com zeólita
natural, como adubação de cobertura, em área de produção comercial de rosas
(Rosa spp.). Os tratamentos foram: duas doses de ureia (60 e 120 kg ha-1),
com e sem zeólitas. As fontes nitrogenadas foram aplicadas na superfície
do solo, e a volatilização foi determinada com uso de câmara semiaberta
livre estática. As variáveis quantitativas e qualitativas das hastes florais
colhidas foram utilizadas para determinação da eficiência agronômica dos
fertilizantes. A mistura com zeólitas diminuiu as perdas de N-NH3 em 30%,
em comparação ao fertilizante ureia comercial, e mostra maior eficiência
agronômica, tendo resultado em incremento de 25 dúzias de hastes florais por
quilograma de N aplicado.


Termos para indexação: Rosa, alumino-silicatos, captura de amônio,
liberação lenta, estilbita.  aROSA  aPLANTA ORNAMENTAL  aADUBAÇÃO  aEVAPORAÇÃO  aFISIOLOGIA VEGETAL  aEFICIÊNCIA AGRONÔMICA0 0920dBrasília-DF Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA 1966-o2023-436357tPesquisa Agropecuária Brasileira (Brazil)x0100-204Xgv. 56 p. 1-9; (2021)wBR2024000320  uhttps://www.scielo.br/j/pab/a/kfFtd34JVNJ77xvJzHBCvYx/?format=pdf&lang=en